An income tax surcharge is an additional tax levied on your base income-tax liability — not on your total income — once your taxable income crosses specific thresholds. It is India’s way of asking higher earners to contribute a little more: first your normal tax is computed, then the surcharge percentage is applied on that tax, and finally the 4% Health & Education Cess is calculated on the combined total. The same structure continues under the new Income Tax Act, 2025 (536 sections, effective 1 April 2026), so everything below applies to both the current law and the new Act.
By the numbers: Under the default new tax regime for FY 2025-26, the peak surcharge is capped at 25% — against 37% under the old regime — which caps the top effective tax rate at about 39% instead of 42.74%. Source: Income Tax Department.
Surcharge at a glance — individuals, HUFs, AOPs & BOIs
| Total taxable income | Old regime | New regime (default) |
|---|---|---|
| Up to ₹50 lakh | Nil | Nil |
| ₹50 lakh – ₹1 crore | 10% | 10% |
| ₹1 crore – ₹2 crore | 15% | 15% |
| ₹2 crore – ₹5 crore | 25% | 25% |
| Above ₹5 crore | 37% | 25% (capped) |
“Nine out of ten surcharge shocks I see are people just past a threshold — always check marginal relief before you panic; the law itself caps your extra tax to your extra income.” — CA Juber Attar, TaxFetch e-CA Tax Expert
What is surcharge and how is it applied?
Think of your final tax bill as three layers:
- Base tax — computed on your taxable income using the slab rates (or special rates for capital gains, lottery, etc.).
- Surcharge — a percentage of the base tax, triggered only when total taxable income crosses ₹50 lakh (for individuals).
- Health & Education Cess — 4% of (base tax + surcharge).
So a 10% surcharge does not mean 10% more income tax rate — it means your computed tax amount grows by 10% before cess. That distinction is exactly why the thresholds create sharp jumps, and why the law provides marginal relief at every boundary.
Surcharge rates for individuals, HUFs, AOPs and BOIs
The rates scale with income, and the single biggest difference between the two regimes appears above ₹5 crore:
| Total taxable income | Surcharge — old regime | Surcharge — new regime | Top effective rate (30% slab + cess) |
|---|---|---|---|
| Up to ₹50 lakh | Nil | Nil | 31.20% |
| ₹50 lakh – ₹1 crore | 10% | 10% | 34.32% |
| ₹1 crore – ₹2 crore | 15% | 15% | 35.88% |
| ₹2 crore – ₹5 crore | 25% | 25% | 39.00% |
| Above ₹5 crore | 37% | 25% | 42.74% (old) / 39.00% (new) |
The 25% cap is one of the strongest reasons ultra-high earners choose the default new regime: on income above ₹5 crore it shaves nearly 3.74 percentage points off the effective rate.
Which incomes get the 15% surcharge cap?
To prevent extreme taxation of market-linked income, the higher surcharge rates of 25% and 37% never apply to the tax on certain income streams. No matter how large your total income is, the surcharge on tax attributable to the following is capped at 15%:
| Income type | Section | Maximum surcharge |
|---|---|---|
| Dividend income | — | 15% |
| Short-term capital gains on listed equity / equity funds | 111A | 15% |
| Long-term capital gains on listed equity / equity mutual funds | 112A | 15% |
| Other specified long-term capital gains | 112 | 15% |
Example: an investor with total income of ₹6 crore in the old regime, of which ₹4 crore is equity LTCG u/s 112A. The 37% surcharge applies only to the tax on the ₹2 crore of “other” income; the tax on the entire ₹4 crore of LTCG carries at most a 15% surcharge. On large capital-gains years, this cap alone can save tens of lakhs.
Surcharge rates for companies, firms and co-operative societies
Business entities follow entirely different thresholds and rates:
| Entity | ₹1 crore – ₹10 crore | Above ₹10 crore | Special cases |
|---|---|---|---|
| Domestic company | 7% | 12% | Flat 10% if taxed u/s 115BAA / 115BAB (any income level) |
| Foreign company | 2% | 5% | — |
| Partnership firm / LLP | 12% once taxable income exceeds ₹1 crore | — | |
| Co-operative society | 7% | 12% | Flat 10% under the concessional 115BAD/115BAE route |
Note the pattern: for non-individual entities the surcharge trigger starts at ₹1 crore, not ₹50 lakh, and there is no multi-slab ladder — just one or two steps.
What is marginal relief and why is it your safety net?
Marginal relief guarantees that the extra tax you pay because of the surcharge can never exceed the extra income you earned above the threshold. Without it, earning ₹1 more than ₹50 lakh could cost you lakhs in additional tax — an absurd outcome the law explicitly prevents.
The Income Tax portal applies a standardised four-step formula:
- Tax on actual income: compute base tax on your real income and add the full surcharge your income triggers. This is the “Before Marginal Relief” figure.
- Maximum allowed tax: compute the tax as if your income were exactly at the threshold (₹50 lakh, ₹1 crore, etc.), then add 100% of your excess income above that threshold to it. This is the ceiling.
- Compare: if Step 1 exceeds Step 2, the difference is your marginal relief amount.
- Final liability: the relief is subtracted from your surcharge, giving the “After Marginal Relief” figure — then 4% cess applies on the result.
Marginal relief example 1: ₹51 lakh income (old regime)
A taxpayer under the old-regime slabs has net taxable income of ₹51,00,000 — ₹1,00,000 over the ₹50 lakh boundary:
| Step | Without relief | With relief |
|---|---|---|
| 1. Base tax | ₹13,42,500 | ₹13,12,500 (tax at exactly ₹50L) |
| 2. Plus surcharge | + ₹1,34,250 (full 10%) | + ₹1,00,000 (100% of excess income) |
| 3. Subtotal | ₹14,76,750 | ₹14,12,500 (capped ceiling) |
| 4. Marginal relief | ₹0 | – ₹64,250 |
| 5. Net total (pre-cess) | ₹14,76,750 | ₹14,12,500 |
Without relief, that extra ₹1,00,000 of income would have cost ₹1,64,250 in additional tax — you would literally lose money by earning more. Marginal relief slashes the surcharge by ₹64,250 so your additional tax exactly equals your additional income.
Marginal relief example 2: ₹1.01 crore income (new regime, FY 2025-26)
Crossing the ₹1 crore line bumps the surcharge from 10% to 15% on the entire tax. New-regime slabs give base tax of ₹26,10,000 on ₹1.01 crore, and ₹25,80,000 on exactly ₹1 crore:
| Step | Without relief | With relief |
|---|---|---|
| Base tax | ₹26,10,000 | ₹25,80,000 (at exactly ₹1Cr) |
| Surcharge | + ₹3,91,500 (15%) | + ₹2,58,000 (10%) + ₹1,00,000 excess |
| Subtotal | ₹30,01,500 | ₹29,38,000 (ceiling) |
| Marginal relief | ₹0 | – ₹63,500 |
| Net total (pre-cess) | ₹30,01,500 | ₹29,38,000 |
Marginal relief example 3: ₹2.02 crore income (new regime)
The ₹2 crore boundary is the steepest — surcharge jumps from 15% to 25%. Base tax on ₹2.02 crore is ₹56,40,000; on exactly ₹2 crore it is ₹55,80,000:
| Step | Without relief | With relief |
|---|---|---|
| Base tax | ₹56,40,000 | ₹55,80,000 (at exactly ₹2Cr) |
| Surcharge | + ₹14,10,000 (25%) | + ₹8,37,000 (15%) + ₹2,00,000 excess |
| Subtotal | ₹70,50,000 | ₹66,17,000 (ceiling) |
| Marginal relief | ₹0 | – ₹4,33,000 |
| Net total (pre-cess) | ₹70,50,000 | ₹66,17,000 |
Here relief is worth ₹4.33 lakh — the bigger the rate jump at a threshold, the bigger the rescue.
How do surcharge and cess stack together?
The complete computation order, exactly as the portal applies it:
- Compute base tax on taxable income (slab rates + special rates).
- Add surcharge at the applicable rate (after the 15% cap on specified incomes).
- Subtract marginal relief, if any.
- Add 4% Health & Education Cess on the net of steps 1–3.
- Subtract TDS, TCS, advance tax and reliefs (87A rebate applies before surcharge, u/s 89 etc.) to reach your final payable/refund.
Frequently asked questions
Is surcharge calculated on income or on tax?
On tax. A 10% surcharge on a ₹13,42,500 tax bill adds ₹1,34,250 — it does not add 10% of your income. Cess is then charged on the tax-plus-surcharge total.
Does the new tax regime have a lower surcharge?
Rates are identical up to ₹5 crore. Above ₹5 crore the new regime caps surcharge at 25% while the old regime charges 37% — a top effective rate of 39% versus 42.74%.
Is there any surcharge below ₹50 lakh income?
No. For individuals, HUFs, AOPs and BOIs, surcharge applies only when total taxable income exceeds ₹50 lakh. Only the 4% cess applies below that.
Do NRIs pay surcharge at the same rates?
Yes — the same individual slab-based surcharge ladder and the same 15% cap on dividends and equity capital gains apply to non-residents.
Is marginal relief automatic?
Yes. The Income Tax portal (and the TaxFetch Income Tax Calculator) computes it automatically as part of the “Before/After Marginal Relief” sections — you do not need to claim it separately, but you should always verify it was applied when your income is just past a threshold.
Key takeaways
- Surcharge is a tax on tax, starting once individual taxable income crosses ₹50 lakh.
- The ladder runs 10% → 15% → 25% → 37%, but the new regime caps it at 25%.
- Dividends and capital gains u/s 111A, 112 and 112A never suffer more than a 15% surcharge.
- Companies, firms and co-operatives have their own flat structures starting at ₹1 crore.
- Marginal relief guarantees your extra tax never exceeds your extra income at any threshold — check it whenever you are just past ₹50L, ₹1Cr, ₹2Cr or ₹5Cr.
Want to see your exact surcharge and marginal relief without doing any of this math? Run your numbers through the free TaxFetch Income Tax Calculator — it applies the full ladder, the 15% caps and marginal relief automatically for both regimes.
